Accurate direct N-body simulations help to obtain detailed information about the dynamical
evolution of star clusters. They also enable comparisons with analytical models and Fokker …

Computer use in astronomy continues to increase, and so also its impact on the
environment. To minimize the effects, astronomers should avoid interpreted scripting …

Close encounters between two bodies in a disc often result in a single orbital deflection.
However, within their Jacobi volumes, where the gravitational forces between the two bodies …

Aims. We perform a simulation using the Astrophysical Multipurpose Software Environment
of the Orion Trapezium star cluster in which the evolution of the stars and the dynamics of …

Chaos is present in most stellar dynamical systems and manifests itself through the
exponential growth of small perturbations. Exponential divergence drives time irreversibility …

We discuss the events that led to the giant eruption of Eta Carinae, and find that the mid-
nineteenth century (in 1838–1843) giant mass-loss outburst has the characteristics of being …

The dynamical stability of hierarchical triple systems is a long-standing question in celestial
mechanics and dynamical astronomy. Assessing the long-term stability of triples is …

Dynamical scattering of binaries and triple systems of stars, planets, and compact objects
may produce highly inclined triple systems subject to Kozai–Lidov (KL) oscillations …

In self-gravitating N-body systems, small perturbations introduced at the start, or infinitesimal
errors that are produced by the numerical integrator or are due to limited precision in the …

We compare the observed size distribution of circumstellar discs in the Orion Trapezium
cluster with the results of N-body simulations in which we incorporated an heuristic …